what is the difference between both the code ..
I don't see any difference between the code
that is embedded between the system.out's
am I missing something ??
----- Original Message -----
From: "ShriKant Vashishtha" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, December 14, 2001 4:34 AM
Subject: OffBeat question...Java performance.
> Hi,
>
> I am trying to judge the performance impact of the following Java code.
>
> String [] arrayStr = new String[20000];
> System.out.println(System.currentTimeMillis());
> for(i=0;i<arrayStr.length;i++){
> String a="aa";
> }
> System.out.println(System.currentTimeMillis());
>
> Output:
> 1008319728796
> 1008319728799
>
> String [] arrayStr = new String[20000];
> int length = arrayStr.length;
> System.out.println(System.currentTimeMillis());
> for(i=0;i<arrayStr.length;i++){
> String a="aa";
> }
> System.out.println(System.currentTimeMillis());
>
> Output:
> 1008319767200
> 1008319767221
>
> In my view the first code stub should have been faster as in the second
> snippet we are getting an overhead of a instance variable call over an
> String [] object compared to the length already computed in the first
> one. What is happening behind the scene, I am not aware. Could somebody
> please explain.
>
> Thanks,
> -ShriKant
>
>
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